"In the year of Khaibar, the Messenger of Allah allocated four shares to Az-Zubair bin Al-'Awwam: A share of Az-Zubair, a share for the relatives of Safiyyah bint 'Abdul-Muttalib, the mother of Az-Zubair, and two shares for the horse."  

أَنَّهُ كَانَ يَقُولُ ضَرَبَ رَسُولُ اللَّهِ ﷺ عَامَ خَيْبَرَ لِلزُّبَيْرِ بْنِ الْعَوَّامِ أَرْبَعَةَ أَسْهُمٍ سَهْمًا لِلزُّبَيْرِ وَسَهْمًا لِذِي الْقُرْبَى لِصَفِيَّةَ بِنْتِ عَبْدِ الْمُطَّلِبِ أُمِّ الزُّبَيْرِ وَسَهْمَيْنِ لِلْفَرَسِ